CVE-2026-82810 Information disclosure in 2FA Authenticator Extension
A local attacker can exploit the background service worker to disclose sensitive information from the 2FA Authenticator Extension.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82810?
CVE-2026-82810 is a medium-severity vulnerability in extension.vn 2FA Authenticator Extension, published on 31 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A weakness has been identified in extension.vn 2FA Authenticator Extension 1.0.0.2 on Chrome. The impacted element is the function chrome.runtime.onMessageExternal.addListener of the component Background Service Worker. Executing a manipulation of the argument sender.id can lead to information disclosure. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Which versions are affected by CVE-2026-82810?
How do I fix CVE-2026-82810?
No fix has been published for CVE-2026-82810 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82810 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82810 exists.
Sources
Also known as GHSA-7rrg-c5fp-7863.